Write a java program that displays the time of day, on an analog clock. I need help creating an on or off option for the second hand of a clock that must be displayed and an option to exit the application itself. This is a GUI computer science project.

// secondHandApp.java import javax.swing.JComponent; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.geom.Ellipse2D; import java.awt.geom.Line2D; import java.awt.geom.Point2D; import java.awt.Color; import java.util.GregorianCalendar; import java.util.Calendar; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.Timer; import javax.swing.JFrame; public class secondHandApp extends JComponent { public secondHandApp() { secondHandVisible = false; start(); } public void paintComponent(Graphics g) { Graphics2D g2 = (Graphics2D)g; g2.setColor(Color.black); // Draw the face of the clock...a circle for this program Ellipse2D.Double circle = new Ellipse2D.Double(TOP, LEFT, WIDTH, HEIGHT); g2.draw(circle); Point2D.Double center = new Point2D.Double( (HEIGHT+LEFT+LEFT)/2, (WIDTH+TOP+TOP)/2); // Get time of day... GregorianCalendar currentTime = new GregorianCalendar(); int seconds = currentTime.get(Calendar.SECOND); double percent_of_60secs = seconds / 60.0; double x = Math.cos(TWO_PI * percent_of_60secs - HALF_PI) * SECOND_HAND_RADIUS + HOFFSET; double y = Math.sin(TWO_PI * percent_of_60secs - HALF_PI) * SECOND_HAND_RADIUS + VOFFSET; Point2D.Double p1 = new Point2D.Double(x,y); Line2D.Double secondHand = new Line2D.Double(p1, center); g2.setColor(Color.black); g2.draw(secondHand); } // Create a timer to generate an event (call to repaint()) once per second public void start() { class EventTimer implements ActionListener // Note: a class within a method { public void actionPerformed(ActionEvent event) { repaint(); } } EventTimer listener = new EventTimer(); Timer t = new Timer(1000, listener); // 1000 is the # of milliseconds to wait t.start(); } public static final int TOP = 10; public static final int LEFT = 10; public static final int WIDTH = 100; public static final int HEIGHT = 100; public static final int HOFFSET = (HEIGHT+LEFT+LEFT)/2; public static final int VOFFSET = (WIDTH+TOP+TOP)/2; public static final double TOTAL_PERCENT = 100; public static final double RADIUS = 20; public static final double TWO_PI = 2.0 * Math.PI; public static final int MINUTE_HAND_RADIUS = 35; public static final int HOUR_HAND_RADIUS = 22; public static final int SECOND_HAND_RADIUS = 40; public static final double HALF_PI = Math.PI/2; public static final double MINS_PER_HOUR = 60; private boolean secondHandVisible; }